Porsche 911 GT3 RS Tech Dive: Why in which’s the Best 911 of Them All

Friday, July 29th, 2016 - autos

Porsche 911 GT3 RS Tech Dive: Why in which’s the Best 911 of Them All

The Porsche 911 GT3 RS can be, in our opinion, the king of the vast 911 lineup—although the Turbo S can be more expensive to start—in addition to second-in-command to the currently-discontinued 918 Spyder supercar within the modern Porsche hierarchy. Needless to say, when we finally pried ourselves out of the driver’s seat of in which example to capture photos, in which was difficult to put down the camera. however in which was worth the down time to capture the collection of spectacular details in which follow. in which particular car rang in at $192,420 in addition to was equipped with all the weight-saving options in addition to almost none of the luxury frippery—items like a leather Internal, the front-axle lift system, or even air conditioning in addition to a radio were all absent. in which's the build combination most true to the RS lineage.Porsche’s carbon-ceramic brakes—Porsche Ceramic Composite Brake (PCCB), in marketing speak—are a $9210 option on the GT3 RS. currently in their third generation of development, the PCCB rotors are made of silicon carbide reinforced with carbon-fiber chips. They are slightly larger than the standard cast-iron units at 16.1 by 1.4 inches in front in addition to 15.4 by 1.3 inches within the rear, in addition to are clamped by massive fixed aluminum calipers (six pistons front in addition to four pistons rear). in addition to within the case of the GT3 RS (as well as the GT3 in addition to Cayman GT4), the brakes also come with more aggressive Pagid brake pads; the whole system can be utterly confidence inspiring in addition to indefatigable.No matter how large the brakes, they’ll succumb to fade without proper cooling. Pictured here are the GT3 RS’s large ducts channeling cooling air to the rear brakes, one of the reasons in which the RS’s braking stayed consistent lap after lap during our track test, unlike its 911 Turbo S sibling, whose brakes go soft after a couple laps.The sounds in which emanate by these twin pipes are otherworldly; the GT3 RS’s 8800-rpm wail can be one of the best-sounding—in addition to loudest—production-car noises extant. your vehicle sings through a 9.9-pound titanium exhaust, which saves 6.6 pounds over the GT3’s steel muffler. Our relentless high-rpm excursions no doubt helped to cultivate the dramatic purple coloring.Notice the massive amount of height adjustability within the rear shocks; our car can be set to its beginning third or so of travel, even though the rear tires were tucked up into the rear bodywork in addition to were occasionally rubbing during extreme track driving.In addition to front in addition to rear ride-height in addition to anti-roll-bar adjustability, the GT3 RS’s front shock towers (shown here) allow for camber adjustments up to roughly negative 1.5 degrees. however maybe in which could use a little more: Although the GT3 RS cornered at a heady 1.08 g on our skidpad, the latest Corvette Grand Sport, at 1.18 g, comfortably topped in which. The Corvette’s track-alignment settings call for more negative camber, at 2.0 degrees.As within the GT3, in which harder-core RS variant incorporates a tiny actuator (shown within the center of the photo) to steer the rear wheels up to 1.5 degrees in either direction. Below 31 mph, in which turns the rears within the opposite direction of the fronts, which shortens the turning diameter, in addition to above 50 mph in which steers them within the same direction as the front tires. in which’s been expertly dialed in, because the steering can be exemplary in addition to never feels in any way artificial or non-linear.The quickest way around Virginia International Raceway—yes, we had your vehicle at in which year's Lightning Lap shootout—can be to go bounding over the curbs. however in which didn’t happen without some collateral damage to the GT3 RS’s rear fender wells, shown here.Nearly all of the underbody can be covered to smooth airflow—Porsche claims in which the GT3 RS achieves the identical coefficient of drag (0.34) as the GT3 despite having double the downforce. Note the exceptions within the form of the strategic NACA ducts for specific cooling needs.in which nifty Porsche tool threads onto the hub to ensure in which the wheel comes off in addition to goes back on straight in addition to true because, as the Porsche technician was quick to remind us, “dinging a carbon-ceramic brake rotor can be a $6000 mistake.”One of the top priorities of the GT3 RS development team was to shoehorn the 20-inch front in addition to 21-inch rear Michelin Pilot Sport Cup 2 tires by the 918 Spyder supercar into the 911, yielding a 20-percent-larger contact patch than on the GT3. Although the wheels are made of forged aluminum instead of the 918’s (optional) magnesium, they were surprisingly wieldy, which can be probably a large contributor to the GT3 RS’s impressively forgiving ride quality over tiny road imperfections.Archimedes no doubt would likely have gotten a kick out of Porsche’s center-lock wheels, with their stratospheric 443 lb-ft tightening torque requirement. (The GT3 RS’s 4.0-liter falls more than 100 lb-ft short of having sufficient twist to secure your vehicle's lugs at its 6250-rpm peak.) however the Porsche technician actually made the task—which involves torquing, loosening, in addition to then re-tightening the lugs—look easy with in which extraordinarily long torque wrench.Expensive, impractical, fussy, in addition to incredibly cool: Porsche’s center-lock wheels.Although the GT3 RS’s defining characteristic can be its wailing, 500-hp flat-six, in which’s tough to see any visual evidence of its existence by either above or below. Upsized by the GT3’s 3.8 liters to 4.0 liters within the RS by way of a four-millimeter stroke increase, the RS style has fortified pistons in addition to titanium connecting rods, in addition to its crankshaft uses a special tempered steel straight by Porsche’s 919 Hybrid LMP1 race car: The steel can be melted in addition to re-melted multiple times in a vacuum to achieve its ultra-high (in addition to no doubt mega-expensive) purity.With the underbody panels removed, we can finally catch a glimpse of Porsche’s highly evolved, flat-six masterpiece.The GT3 RS can be available only with Porsche’s dual-clutch automatic, called PDK. Although we have a Pavlovian response to the thought of a manual paired with in which glorious engine—as in which can be within the fresh 911 R—the PDK gearbox works terrifically within the GT3 RS. in which's smooth when driven gently in addition to lightning-quick when asked to be. On track in addition to in Sport mode, PDK can be so prescient in which no paddle inputs are required to always be within the optimum gear. Which can be why, love of manuals or no, we can agree with Porsche on one thing: PDK definitely makes for quicker lap times. ---in which style of PDK doesn’t have “creep” functionality (i.e., in which doesn’t engage when the brake can be released; in which waits for a prod of the throttle) in addition to also will select neutral any time the driver pulls both shift paddles simultaneously. in which will then reengage the clutch when the paddles are released— in addition to in which will do so abruptly when paired using a generous throttle application. Because sometimes what you need in life can be a little wheelspin.These carbon-fiber-shell bucket seats are the best sport seats within the business. They have enough lateral support to make them useful on the track, however are generous enough to allow those using a physique larger than in which of a professional racer—in which’s essentially everyone—to drive long distances in comfort. The backrest can be fixed, however we had no qualms with its angle; adjustments include manual fore in addition to aft in addition to a power height. Clambering over their rigid, high-walled sides when getting in can be well worth in which every time.Ostensibly a trickle-down innovation by racing, Porsche’s fresh pit-speed mode—essentially a second cruise-control function in which will limit speed to a selectable set point up to 55 mph—seems gimmicky in addition to proved less-than-intuitive to use, as in which requires switching back in addition to forth between traditional cruise control in addition to pit-speed cruise.One of the very rare no-cost options in Porsche’s vast catalogue can be the GT3 RS’s stereo/infotainment delete. Ditching the 7.0-inch touchscreen in addition to its ancillaries saves 17 pounds.Switching out the Internal door handles for pull loops made of seatbelt material can be a regular Porsche GT trick. In in which case, the deletion of the handles, along with the modified door panels save nearly a pound. (A whole pound!)The additional no-cost light-weighting opportunity can be to eliminate the air-conditioning system, saving 26 pounds, although after a 700-mile road trip in 0-degree heat, in which’s not one we’d necessarily recommend. Running the fan seemed to bring in air in which was always substantially warmer than the ambient temperature, in addition to we also had trouble keeping the windows by fogging when in which was raining.The driver’s delight can be directly proportional to the proximity of the tachometer needle to its monstrous 8800-rpm limit. Factoid: To hold the gauge faces rendered in white, as on our test car, can be an $860 option. (Red can be also available for the same cost.)Sticker versions of the Porsche crest up front in addition to the style name at the back are an RS tradition. in which can be done not so much for weight savings, says Porsche, however as a tie-in with its (in addition to, definitely, any maker's) race cars.The front splitter in addition to the fender vents (see next slide) are the main contributors to the GT3 RS’s additional front downforce. however in which photo also shows our car’s indulgent, $3715 headlights: swiveling LED lamps with Porsche’s “four point” daytime running lights. $605 of in which upcharge can be for the black headlight surrounds.These gaping vents within the top of the front fenders allow high-pressure air to exit, in addition to are thus a significant enabler to front downforce, which can be a claimed 267 pounds at 186 mph. The fact in which these unique fenders are made of carbon fiber saves several pounds versus the aluminum pieces on additional 911s.Working in tandem with the dramatic ducktail shape of the carbon-fiber engine cover, the massive carbon-fiber rear wing—which stands just over several feet off of the ground—adds 494 pounds of downforce at 186 mph within the most aggressive of its three adjustable positions. Overall, the GT3 RS generates three times as much downforce as the GT3, in addition to roughly 80 percent of what the GT3 Cup racer makes.Hybrids in addition to EVs aren’t the only automotive recipients of lithium-ion batteries, proven by in which $2300 Samsung option in which saves 30 pounds. However, at 40 amp-hours, the energy capacity of in which lithium-ion unit can be just over half in which of the standard, 70 amp-hour nickel-metal-hydride battery. in which’s also not effective below temperatures of 14 degrees Fahrenheit. A GT3 RS with in which option actually comes with both batteries, so the owner can swap between them to enable cold-weather driving if desired.Instead of the typical lug wrench, the GT3 RS comes with in which hefty socket used to remove the single-lug wheels. in which's tucked out of the way under a plastic cover within the frunk (front trunk) area—the torque wrench to budge the wheels by or to the specified 443 lb-ft can be not included. Sure, in which adds noncritical weight, however in which beats the odds in which a roadside-assistance service will have one, in addition to also saves the $300 to purchase one separately.A frunklid made of carbon fiber instead of aluminum saves 3.3 pounds. in which’s also one of the RS’s few material upgrades in which are readily viewable, in addition to in which substantially enhances the front trunklid’s visual appeal when open.Although in which doesn’t look like much, in which can be the automotive world’s first production magnesium roof. Porsche claims in which in which’s 24-percent lighter than an equivalent carbon-fiber part—in which’s 1.5 pounds—not because magnesium can be inherently lighter than carbon fiber, however due to the additional weight added in surface films in addition to paint coats to smooth out the inherently rougher surface of a carbon-fiber panel. Also fascinating can be the complex supply chain: The magnesium can be strip cast in addition to then warm-rolled down to a thickness of 1.1 millimeters at a supplier in Korea, where in which can be then cut into a roof-sized chunk. in which can be then shipped to another supplier in Canada, which shapes in which to the correct curvature at roughly 800 degrees F. The magnesium panel then gets a U.S. passport stamp, where in which receives a plasma oxidation coating. Then, in which’s off to Germany, where in which’s finally bolted in addition to bonded to the GT3 RS’s roof frame in addition to painted along with the rest of your vehicle.Minimizing the tire-to-wheel gap can be already a Porsche strong suit, however the GT3 RS goes a step further with its monster 21-inch rear tires, where they’re tucked up inside the fender. The edges of the fenders on in which car were already rolled for clearance purposes in addition to, as seen earlier, the tires were occasionally rubbing during max-attack laps at VIR.Since the GT3 RS employs the wide bodywork by the Turbo—the RS’s track can be increased by 1.8 inches in front in addition to 1.1 inches within the rear versus the GT3—Porsche had to figure out what to do with those gaping fender vents, which, within the Turbo, feed intercoolers. So the GT3 RS’s intake plumbing was revised producing sure in which in which’s currently the only 911 to inhale through the side intakes. (All the others breathe through the top of the engine cover.) Upsides include both enhanced intake roar in addition to a claimed 10-hp boost over the rated 500 figure at high speeds by the ram-air effect.

Porsche 911 GT3 RS Tech Dive: Why in which’s the Best 911 of Them All

Source: Porsche 911 GT3 RS Tech Dive: Why in which’s the Best 911 of Them All

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